japod@23: 
japod@23: package org.apidesign.apifest08.currency;
japod@23: 
japod@23: import java.math.BigDecimal;
japod@23: 
japod@23: /**
japod@23:  * Exchange rate value. Contains <code>from</code> and <code>to</code> value.
japod@23:  * 
japod@23:  * @author arnostvalicek
japod@23:  */
japod@23: public class ExchangeRate {
japod@23:     private BigDecimal numberFor;
japod@23:     private BigDecimal numberGet;
japod@23: 
japod@41:     /**
japod@41:      * Constructor for new exchange rate holding two values - <em>from value</em> and <em>to value</em>
japod@41:      * @param fromValue Exchange rate <em>from value</em>
japod@41:      * @param toValue Exchange rate <em>to value</em>
japod@41:      */
japod@23:     public  ExchangeRate(BigDecimal fromValue, BigDecimal toValue) {
japod@23:         this.numberFor = fromValue;
japod@23:         this.numberGet = toValue;
japod@23:     }
japod@41:     
japod@41:     /**
japod@41:      * Create new instance of <code>ExchangeRate</code> based on provided exchange rate, but swapping its
japod@41:      * <em>from</em> and <em>to</em> value.
japod@41:      * <p>
japod@41:      * Provided exchange rate is not chaged, this method returns different instance describing reverted exchange rate.
japod@41:      * 
japod@41:      * @param rate Exchange rate which describes rate to be reverted.
japod@41:      * @return Instance of reverted rate.
japod@41:      */
japod@41:     public static ExchangeRate createRevertedRate(ExchangeRate rate) {
japod@41:         ExchangeRate reverted = new ExchangeRate(rate.getToValue(), rate.getFromValue());
japod@41:         return reverted;
japod@41:     }
japod@23: 
japod@23:     @Override
japod@23:     public String toString() {
japod@23:         return "for "+numberFor+" recieve "+numberGet+" @"+getClass().getName();
japod@23:     }
japod@23:     
japod@41:     /**
japod@41:      * Return exchange rate <em>from</em> value stored in this object.
japod@41:      * @return Returns <em>from</em> value for this exchange rate.
japod@41:      */
japod@23:     public BigDecimal getFromValue() {
japod@23:         return numberFor;
japod@23:     }
japod@23:     
japod@41:     /**
japod@41:      * Return exchange rate <em>to</em> value stored in this object.
japod@41:      * @return Returns <em>to</em> value for this exchange rate.
japod@41:      */
japod@23:     public BigDecimal getToValue() {
japod@23:         return numberGet;
japod@23:     }
japod@23:     
japod@23:     
japod@23: //    public ExchangeRate createExchangeRate(BigDecimal forValue, BigDecimal getValue) {
japod@23: //        ExchangeRate rate = new ExchangeRate(forValue, getValue);
japod@23: //        return rate;
japod@23: //    }
japod@23:     
japod@23:     
japod@23:     
japod@23: }